Question 1 of 268 Next A 23 year old man is shot in the chest during a robbery. The left lung is lacerated and is bleeding. An emergency thoracotomy is performed. The surgeons place a clamp over the hilum of the left lung. Which of the following structures lies most anteriorly at this level? A. Vagus nerve B. Oesophagus C. Descending aorta D. Phrenic nerve E. Azygos vein The phrenic nerve lies anteriorly at this point. The vagus passes anteriorly and then arches backwards immediately superior to the root of the l eft bronchus, giving off the recurrent laryngeal nerve as it does so. Previous Question 2 of 268 Next A 22 year old man presents with appendicitis. At op eration the appendix is retrocaecal and difficult to access. Division of which of the following anatomical structures should be undertaken? A. Ileocolic artery B. Mesentery of the caecum C. Gonadal vessels D. Lateral peritoneal attachments of the caecum E. Right colic artery The commonest appendiceal location is retrocaecal. Those struggling to find it at operation should trace the tenia to the caecal pole where the appendix is located. If it cannot be mobilised easily then division of the lateral caecal